SICK W4S-3 Inox Photoelectric Sensor

SICK W4S-3 Inox Photoelectric Sensor

SICK W4S-3 Inox Photoelectric Sensor Supplier & Dealer – Industrial Doctor

Looking for a reliable SICK W4S-3 Inox Photoelectric Sensor for industrial automation, packaging, food processing, beverage, pharmaceutical or machine-detection applications? Industrial Doctor supplies SICK sensor solutions for industrial automation and object-detection requirements.

The SICK W4S-3 Inox is a compact stainless-steel photoelectric sensor family designed for reliable object detection in demanding industrial environments. The Inox design is particularly suitable for applications exposed to moisture, frequent cleaning and challenging operating conditions. SICK specifies stainless-steel 316L/V4A housing options and high enclosure protection for the W4S-3 Inox family.

What is SICK W4S-3 Inox Photoelectric Sensor?

The W4S-3 Inox is a miniature photoelectric sensing solution used to detect objects without physical contact. It uses visible red light and optical sensing technology to detect the presence, absence or movement of products on automated production and handling systems.

Depending on the selected W4S-3 Inox version, the sensor family includes proximity/diffuse, retro-reflective and through-beam configurations. SICK's technical documentation lists variants such as WTB4S-3V, WTF4S-3V, WL4S-3V and WSE4S-3V.

This makes the W4S-3 Inox suitable for manufacturers and automation engineers looking for a compact photoelectric sensor for industrial object detection.

SICK W4S-3 Inox Specifications

Specification Details

Product SICK W4S-3 Inox

Product Type Miniature Photoelectric Sensor

Light Type Visible Red Light

Wavelength 650 nm

Light Source PinPoint LED

Housing Stainless Steel 316L / V4A, depending on version

Supply Voltage 10–30 V DC

Maximum Output Current Up to 100 mA

Response Time < 0.5 ms

Switching Frequency Up to 1,000 Hz

Protection Class III

Enclosure Protection IP66 / IP67 / IP68 / IP69K depending on version

Operating Temperature Approximately −30°C to +70°C depending on operating conditions/version

Teach-in Single teach-in button and/or cable teach-in on applicable variants

Application Object detection, counting, packaging, conveyors, food & beverage, pharmaceuticals and automation

The official SICK technical documentation specifies 10–30 V DC supply, response time below 0.5 ms, switching frequency up to 1,000 Hz and output current up to 100 mA for the listed W4S-3 Inox variants.

Why Choose SICK W4S-3 Inox?

The W4S-3 Inox is designed for applications where a normal industrial sensor may not be sufficient.

Stainless Steel Construction

The Inox version uses a robust stainless-steel housing designed for demanding environments. SICK identifies 316L/V4A stainless steel for the housing of the W4S-3 Inox family.

High Protection Against Water and Cleaning

Depending on the version, the W4S-3 Inox family offers IP66, IP67, IP68 and IP69K protection. This makes it particularly relevant for machinery that is regularly washed or exposed to moisture.

Fast Object Detection

With a response time of less than 0.5 ms and switching frequency up to 1,000 Hz for the documented variants, the sensor is suitable for fast-moving automated processes.

Compact Design

The miniature design allows the sensor to be installed where machine space is limited.

Reliable Detection

SICK describes W4 Inox sensors as being designed for demanding wet-area applications, including processing plants, filling lines and packaging machinery.

Where is SICK W4S-3 Inox Used?

The SICK W4S-3 Inox Photoelectric Sensor can be used in many industrial automation applications.

1. Food Processing Machinery

Used for detecting products, bottles, containers and packages on automated food-processing lines.

2. Beverage & Bottling Plants

Photoelectric sensors can detect bottles, containers, caps and gaps between products on filling and conveying systems.

SICK specifically describes W4 Inox applications in filling lines and bottle transport systems.

3. Pharmaceutical Machinery

The stainless-steel and wash-down-oriented design makes the product family relevant to pharmaceutical manufacturing environments where cleanliness and reliable detection are important.

4. Packaging Machines

The sensor can be used for product presence detection, counting, positioning and monitoring products moving through packaging equipment.

5. Conveyor Systems

It can detect products travelling on conveyor belts and provide switching signals to automation controls.

6. Industrial Automation

The sensor can be integrated into automated machines for non-contact object detection.

7. Material Handling

Useful for detecting packages, boxes, containers and components during automated material movement.

8. Wet and Wash-Down Areas

The Inox design is especially relevant where equipment is exposed to regular cleaning and water. SICK describes W4 Inox for harsh cleaning environments and wet areas.

SICK W4S-3 Inox Sensor for Indian Industries

For Indian manufacturers, the W4S-3 Inox can be relevant when a production machine operates in a high-moisture, wash-down or hygiene-sensitive environment.

Typical Indian applications can include:

Food processing plants

Dairy plants

Bottling plants

Water and beverage plants

Pharmaceutical manufacturing

Packaging factories

FMCG production lines

Conveyor systems

Automated assembly machines

Industrial material handling

Process automation

Machine builders and OEM automation systems

For applications involving frequent cleaning, chemical exposure or water, the exact sensor variant should be selected according to the machine environment and manufacturer's specifications. SICK highlights W4 Inox sensors for challenging cleaning and wet-area environments.

How Does a Photoelectric Sensor Work?

A photoelectric sensor detects an object using light rather than physical contact.

In simple terms:

Sensor emits light → Object enters detection area → Light condition changes → Sensor detects object → Output signal goes to control system/PLC

This allows machines to detect products automatically without touching them.

For example, on a bottle-filling line, a photoelectric sensor can detect whether a bottle is present at a particular position and send a signal to the machine control system.

SICK also describes applications involving object and gap monitoring, counting and completeness checking in automated processes.

How to Select the Correct W4S-3 Inox Sensor?

Before purchasing a SICK W4S-3 Inox sensor, check:

Required sensing method

Sensing distance

Object size

Object colour

Transparent or reflective object

Required output type

Supply voltage

Connection type

Mounting space

Ambient temperature

Water/cleaning exposure

IP protection requirement

Required response speed

Exact SICK article number

Best buying practice: If you already have an existing SICK sensor, share the article number printed on the sensor or a clear photograph. This helps identify the exact replacement instead of selecting only by the W4S-3 Inox family name.

SICK W4S-3 Inox Supplier – Industrial Doctor

Industrial Doctor supplies industrial automation and sensing products for customers looking for reliable automation components.

If you are searching for a SICK W4S-3 Inox dealer, supplier, distributor or replacement sensor, provide the required article number, sensing type, voltage and quantity to Industrial Doctor for product availability and selection assistance.

Frequently Asked Questions

What is SICK W4S-3 Inox?

SICK W4S-3 Inox is a miniature photoelectric sensor family designed for non-contact object detection in industrial and demanding environments.

What is SICK W4S-3 Inox used for?

It is used for detecting objects, products, bottles, packages and components in automation, conveyors, packaging, food, beverage and pharmaceutical machinery.

Is W4S-3 Inox suitable for food processing?

The W4 Inox family is designed for demanding wet-area applications in food and beverage processing and filling/packaging machinery. The exact sensor and installation should be selected according to the application's hygiene and regulatory requirements.

Is SICK W4S-3 Inox waterproof?

The exact protection rating depends on the variant. SICK's documentation lists IP66, IP67, IP68 and IP69K protection for applicable W4S-3 Inox variants.

What voltage does SICK W4S-3 Inox require?

The documented W4S-3 Inox variants operate from 10–30 V DC.

What is the response time of W4S-3 Inox?

For the documented variants, the response time is less than 0.5 ms.

What type of light does the sensor use?

The W4S-3 Inox technical documentation specifies visible red light with a 650 nm wavelength and PinPoint LED as the light source.

Can W4S-3 Inox detect moving products?

Yes. Photoelectric sensors are commonly used to detect moving products on conveyors and automated production lines. The documented variants offer fast response and switching characteristics suitable for high-speed applications.

Can it be used on a conveyor belt?

Yes. Conveyor-based product detection is a common application for photoelectric sensors, including W4 Inox applications described by SICK.

Can W4S-3 Inox be used in packaging machines?

Yes. SICK identifies packaging machinery and filling lines among the applications for the W4 Inox family.

How do I order a SICK W4S-3 Inox sensor?

Provide the exact article number, sensor type, sensing distance and quantity. If you don't know the article number, send a clear photograph of the existing sensor to help identify the correct version.

Where can I buy SICK W4S-3 Inox in India?

Customers looking for a SICK W4S-3 Inox sensor supplier/dealer in India can contact Industrial Doctor for product availability and the appropriate variant.